[INFO] updating cached repository https://github.com/x72y5e/Rust_sudoku
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 933d838c08a70f1c149281534eb1e742d55f9f77
[INFO] checking x72y5e/Rust_sudoku against master#e1beee4992ad4b235fc700bf7af1ee86f894ea53 for pr-74130
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fx72y5e%2FRust_sudoku" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/x72y5e/Rust_sudoku on toolchain e1beee4992ad4b235fc700bf7af1ee86f894ea53
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/x72y5e/Rust_sudoku
[INFO] finished tweaking git repo https://github.com/x72y5e/Rust_sudoku
[INFO] tweaked toml for git repo https://github.com/x72y5e/Rust_sudoku written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/x72y5e/Rust_sudoku already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2f0544d52fc49b3084ab7a0cf7cb7771814e10ba3259a8971b62fc23675eaf84
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2f0544d52fc49b3084ab7a0cf7cb7771814e10ba3259a8971b62fc23675eaf84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2f0544d52fc49b3084ab7a0cf7cb7771814e10ba3259a8971b62fc23675eaf84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f0544d52fc49b3084ab7a0cf7cb7771814e10ba3259a8971b62fc23675eaf84", kill_on_drop: false }`
[INFO] [stdout] 2f0544d52fc49b3084ab7a0cf7cb7771814e10ba3259a8971b62fc23675eaf84
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 45daaac117e1d5b0e990a4cfc52a0c44baba8ff3bb37e6319842a46c467c995a
[INFO] running `Command { std: "docker" "start" "-a" "45daaac117e1d5b0e990a4cfc52a0c44baba8ff3bb37e6319842a46c467c995a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.45
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling autocfg v0.1.1
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]    Compiling ndarray v0.12.1
[INFO] [stderr]     Checking permutohedron v0.2.4
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]    Compiling rand v0.6.3
[INFO] [stderr]     Checking rand_os v0.1.0
[INFO] [stderr]     Checking ndarray-rand v0.9.0
[INFO] [stderr]     Checking sudoku v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.99s
[INFO] running `Command { std: "docker" "inspect" "45daaac117e1d5b0e990a4cfc52a0c44baba8ff3bb37e6319842a46c467c995a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45daaac117e1d5b0e990a4cfc52a0c44baba8ff3bb37e6319842a46c467c995a", kill_on_drop: false }`
[INFO] [stdout] 45daaac117e1d5b0e990a4cfc52a0c44baba8ff3bb37e6319842a46c467c995a